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Numerical study on viscous flow field of forced rolling of ships with bilge keels

机译：舱底扣悬挂式钢丝粘性流场的数值研究

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摘要

Rolling is a dangerous motion for navigation, and has been one of the focuses in the investigation of ship hydrodynamics. Large eddy simulation is adopted for the numerical simulation of the viscous flow field around the cross section of Series-60 in the condition of forced rolling. A numerical simulation scheme of high precision is established based on the systematic analysis of spatial and temporal discretization. The integral process of the vortex from generation to dissipation is analyzed in detail by the scheme established, it is demonstrated that a vortex falling off from the bilge keel is not separated but connected to the bilge keel until a reverse motion arise. The influence of roll amplitude and period on the vortex structure is investigated, and it is found that the vortex structure is susceptible to roll amplitude rather than period.
机译：滚动是导航的危险运动，是船舶流体动力学调查中的焦点之一。 在强制轧制条件下，采用大涡流仿真来采用粘性流场横截面横截面的数值模拟。 基于空间和时间离散化的系统分析建立了高精度的数值模拟方案。 通过建立的方案详细分析了从发电到耗散的涡流的整体过程，证明了从舱底龙骨脱落的涡流不分开，而是连接到舱底龙骨直到出现反向运动。 研究了卷幅度和周期对涡旋结构的影响，发现涡旋结构易受卷振幅而不是时期的影响。

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  • 来源
    《Ocean Engineering》 |2021年第1期|109860.1-109860.15|共15页
  • 作者

    Deng Rui; Chen Si-yuan; Luo Fu-qiang; Wang Yu-quan; Wu Tie-cheng;

  • 作者单位

    Sun Yat Sen Univ Sch Marine Engn & Technol Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai Zhuhai 519082 Peoples R China;

    Sun Yat Sen Univ Sch Marine Engn & Technol Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai Zhuhai 519082 Peoples R China;

    Sun Yat Sen Univ Sch Marine Engn & Technol Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai Zhuhai 519082 Peoples R China;

    Sun Yat Sen Univ Sch Marine Engn & Technol Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai Zhuhai 519082 Peoples R China;

    Sun Yat Sen Univ Sch Marine Engn & Technol Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai Zhuhai 519082 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Forced rolling; Bilge keel; Vortex shedding; Roll amplitude; Roll period;

    机译：强制滚动;舱底龙骨;涡旋脱落;卷振幅;滚动周期;

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